Highest temperature in Singapore on August 6?

Platform comparison

Market context

Singapore’s hottest reading at Changi Airport on 6 August will likely settle somewhere in the low 30s Celsius, with the market currently pricing 32°C as the main outcome and 31°C as the next most likely band. That is consistent with August climatology for Singapore, where daytime maxima are typically around 31°C, while local showers or cloud cover can cap the day’s peak below the upper end of the range.[1][2][10]

For comparison, the Polymarket book is quoting outcomes as implied probabilities, with 32°C around 78% and 31°C at about 15%, while other venues often present the same view as decimal odds rather than percentages. Betfair and Smarkets also add exchange-style friction through commissions, whereas Polymarket’s pricing is more direct but still reflects liquidity and spread; KYC and access can also differ materially by platform and jurisdiction, which matters for who can actually participate in this weather market. The current 0% YES position therefore looks more like an illiquid or stale read than a true signal against a 32°C or 31°C finish.[2]

The main catalyst is whether Singapore gets enough late-morning or early-afternoon cloud and rain to suppress the daily maximum before the Wunderground settlement window closes at 12:00 UTC, which covers the full local afternoon. The Singapore Meteorological Service has recently highlighted a drier fortnight pattern in one advisory, but August remains a month where brief showers can still interrupt heating, so traders should watch the day-of forecast and any updated rain timing closely.[12][13] The resolution source is the Changi Airport station, so the key question is not island-wide weather but the single highest airport reading posted on Wunderground that day.[2]

Sources: 1 · 2 · 3 · 4 · 5

Methodology

This page compares Highest temperature in Singapore on August 6? specifically across Polymarket, Kalshi, Betfair Exchange and Smarkets. The live probability is the Polymarket mid; the comparison columns summarise each venue's fee structure, KYC, settlement currency and payment rails. Every CTA routes to Polymarket Alternative, which mirrors the Polymarket order book at 0% fees.

Resolution & payout

Settlement is the biggest difference between the four platforms: Polymarket on-chain in USDC (instant), Kalshi USD via CFTC (T+1), Betfair and Smarkets in local currency via bank withdrawal (T+1 to T+3). On-chain settlement clears in minutes — the fastest payout path of the four.

FAQ

Polymarket vs Kalshi — which is better?

Depends on your location. Kalshi is CFTC-regulated, US-only with full KYC. Polymarket is global, on-chain, no KYC up to $1,500. Polymarket has ~10x higher liquidity but higher regulatory risk.

What does Polymarket cost vs Kalshi?

Polymarket: 0% fees, only Polygon network costs (~$0.01/trade). Kalshi: up to 7% per trade plus spread. For high-frequency traders, Polymarket is dramatically cheaper.

Is Betfair a Polymarket alternative?

Only partially. Betfair Exchange is UK-focused with a sports-betting emphasis; they have politics markets but with thinner liquidity than Polymarket. Settlement in GBP/EUR, 2-5% commission on winnings.

Are all these platforms regulated?

No. Kalshi is CFTC-regulated (US). Betfair and Smarkets are UK Gambling Commission licensed. Polymarket operates without explicit regulation — a different risk profile than a regulated sportsbook.

Which platform supports Klarna/SOFORT?

Directly: none. Polymarket accepts only USDC on Polygon. Polymarket Alternative offers a fiat on-ramp via Klarna or SOFORT (DE/AT/CH) and converts internally to USDC for the Polymarket order book. T+1 processing.